I own a small business. There is an employee that I don't really trust which is a horrible feeling when it's my business. I want to know I can trust and rely on my team. They are coming up to their 2 years working for me next April. Am I within my rights to bring it up with them and give them notice if they don't convince me otherwise? Or could I get done for unfair dismissal even though she hasn't worked for me for 2 years yet? Thank you.